Clutch size for 71 C30 w/Big Block?
 

I’m not sure but I don’t think my clutch has ever been changed in my 1 ton. It’s a 71 factory 402/4 speed. What size should the clutch be? Trying to get a clutch and pressure plate kit before I remove this one. Thanks in advance.

Re: Clutch size for 71 C30 w/Big Block?
 

I would think a 12”. That’s what was in my K20 when I tore it down.

Re: Clutch size for 71 C30 w/Big Block?
 

10-4. Are all v-8 flywheels same also?

Re: Clutch size for 71 C30 w/Big Block?
 

I had a 1970 C30 with a big block 402. It had a 12" 3 finger clutch. In that era, there are 168T & 153T flywheels. Big blocks will have the 168T. If you have a 454 it will have an externally balanced flywheel also.